Apache Axis2/Java: deserialization of untrusted Data
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-502.
Summary
Deserialization of Untrusted Data (CWE-502) in the Tribes-based clustering component in Apache Software Foundation Apache Axis2/Java through 2.0.0 on Apache Tomcat (only when Tribes clustering is enabled, which is off by default) allows an unauthenticated remote attacker with network access to the clustering port to execute arbitrary code via a crafted serialized Java object delivered to the cluster channel and deserialized in org.apache.axis2.clustering.tribes.Axis2ChannelListener#messageReceived. Users are recommended to upgrade to version 2.0.1, which fixes this issue by removing the clustering feature entirely.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Critical. Red Hat's page for this CVE →
Not affected: 8 products
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat Hardened Images
- Red Hat JBoss Enterprise Application Platform Expansion Pack
- Red Hat JBoss Web Server 5
Timeline
- 2026-10-02 Threatist record created from CVE-2026-66713
- 2026-10-03 Alias added: GHSA-fhh8-qfj4-g948
References
Sources
- CVE-2026-66713 · CVE Program
- CVE-2026-66713 · NVD
- FIRST EPSS
- GHSA-fhh8-qfj4-g948 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-66713 · Red Hat security data · CC BY 4.0
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